Thoughts of a Shadowhunter(A The Mortal Instruments Fan Fiction)

Vanessa Palencar's life had no sense untill she met the Shadowhunter's.Remembering her past,she discovers that Jace is her twin brother and that she has an enormous power.She needs to find the source of her powers and,in the same time,she needs to help the other Shadowhunters to fight against demons,vampires and all the bad creatures.A war that must be fought but never won.